Determine current project path Ms Access

Hi,
I have been using the following code for some time to allow me to transfer data to an upgraded version of the database. See code snippet 1 below.

Basically it determines the existing Desktop file path.

I now want to change it to all me to transfer the data to a DB in the same folder as the open DB. I have the following code that seems to work, I just need to know if there are any issues I should consider that I have not in the code below.

Do I really need the following part.....
   
If Dir$(sUpgradePath, vbDirectory) = "" Then
        sUpgradePath = Environ("UserProfile") & "\Desktop\"                  'For use with Vista/Win7
    End If

Is there any possibility that Access just would not be able to work out the directory path ?

Any advice would be greatly appreciated.

Kev

'********************code snippet 1 ****************************
On Error GoTo Err_Handler
Dim RS As DAO.Recordset, sSql As String, strQuestion As String, sUpgradePath As String
    DoCmd.SetWarnings False



'Determine user Desktop path
    sUpgradePath = "c:\Desktop\"                                             'For use with WinXP on DRN
    
    If Dir$(sUpgradePath, vbDirectory) = "" Then
        sUpgradePath = Environ("UserProfile") & "\Desktop\"                  'For use with Vista/Win7
    End If
    
    sUpgradePath = sUpgradePath & DLookup("SysUpgradeTitle", "systblVersion", "")


'************************* code snippet 2 **************************************

'Determine current path
    sUpgradePath = CurrentProject.path
    
    'Check for terminating backslash sUpgradePath filepath.
    If Right(sUpgradePath, 1) <> "\" Then
       sUpgradePath = sUpgradePath & "\"
    End If
    
    If Dir$(sUpgradePath, vbDirectory) = "" Then
        sUpgradePath = Environ("UserProfile") & "\Desktop\"                  'For use with Vista/Win7
    End If